An ultrasonic plastic spot welding machine

Abstract

An ultrasonic plastic spot welding machine includes a base, a clamping mechanism for fixing a first workpiece and a second workpiece on the ultrasonic plastic spot welding machine, and a spot welding device for welding the second workpiece onto the first workpiece. Both the clamping mechanism and the spot welding device are mounted on the base. The clamping mechanism is located below the ultrasonic transmitting end of the spot welding device to align the second workpiece with the ultrasonic transmitting end of the spot welding device. This invention provides an ultrasonic plastic spot welding machine that increases the melting speed of the second workpiece, reduces the time required to install the second workpiece onto the first workpiece, and improves product assembly efficiency to a certain extent.

Description

Technical Field

[0001] This utility model belongs to the technical field of welding equipment, specifically relating to an ultrasonic plastic spot welding machine. Background Technology

[0002] See Figure 1 The figure shows an electrical box guide rail plate, which includes a first workpiece 11 and a second workpiece 12. The first workpiece 11 is the main body of the guide rail plate and is made of metal material. It has a guide rail groove 110 and a limiting hole 111. The limiting hole 111 is located at the end of the guide rail groove 110 and on the side wall of the guide rail groove 110. The second workpiece 12 is a limiting part 120 and is made of plastic material. It includes a limiting part 120 and a mounting part 121. When the second workpiece 12 is mounted on the first workpiece 11, the limiting part 120 is located in the guide rail groove 110. The mounting part 121 extends from the inside to the outside of the side wall of the guide rail groove 110 through the limiting hole 111 and is melted by high temperature to fix the second workpiece 12 on the first workpiece 11.

[0003] The existing installation method is as follows: First, hot air is blown onto the second workpiece 12 using a hot air blower or hair dryer until the mounting part 121 of the second workpiece 12 melts. Then, the melted mounting part 121 of the second workpiece 12 is pressed flat by hand, and the diameter of the mounting part 121 of the second workpiece 12 is made larger than the diameter of the limiting hole 111 of the first workpiece 11, so that the second workpiece 12 is installed on the first workpiece 11. The problem is that in the above installation method, the hot air blower or hair dryer needs to blow hot air onto the second workpiece 12 for a certain period of time to melt the second workpiece 12, which will prolong the product assembly time and reduce the product assembly efficiency.

[0004] Therefore, further improvements are needed. Utility Model Content

[0005] The purpose of this invention is to overcome at least one of the shortcomings of the prior art and to provide an ultrasonic plastic spot welding machine that increases the melting speed of the second workpiece, reduces the time for the second workpiece to be installed on the first workpiece, and improves the assembly efficiency of the product to a certain extent.

[0006] To achieve the above objectives, the technical solution provided by this utility model embodiment is as follows:

[0007] An ultrasonic plastic spot welding machine includes a base, a clamping mechanism for fixing a first workpiece and a second workpiece on the ultrasonic plastic spot welding machine, and a spot welding device for welding the second workpiece to the first workpiece. The clamping mechanism and the spot welding device are both disposed on the base. The clamping mechanism is located below the ultrasonic transmitting end of the spot welding device so that the second workpiece is aligned with the ultrasonic transmitting end of the spot welding device.

[0008] The clamping mechanism includes a base plate, a first clamping positioning block and a second clamping positioning block. The base plate is fixed to the worktable by clamps, screws and nuts. The first clamping positioning block and the second clamping positioning block are respectively located on the left and right sides of the top surface of the base plate. When the clamping mechanism is set on the worktable, the first clamping positioning block or the second clamping positioning block is located below the ultrasonic transmitting end of the spot welding device.

[0009] The first fixture positioning block has a first positioning groove on its top surface, and the vertical projection shape of the first positioning groove corresponds to the outer edge of the first workpiece. The second fixture positioning block has a second positioning groove on its top surface, and the vertical projection shape of the second positioning groove corresponds to the outer edge of the first workpiece.

[0010] The first clamp positioning block is provided with a first unloading groove, which is disposed on the bottom surface of the first positioning groove and extends along the length direction of the first clamp positioning block. The second clamp positioning block is provided with a second unloading groove, which is disposed on the bottom surface of the second positioning groove and extends along the length direction of the second clamp positioning block.

[0011] The base is provided with a workbench and a working column. The workbench and the working column are both located on the top surface of the base. The working column is located outside the workbench. The clamping mechanism is fixed on the top surface of the workbench. The spot welding device is located on the working column.

[0012] The spot welding device includes a spot welding machine housing and an ultrasonic generator. The spot welding machine housing is mounted on a working column, and the ultrasonic generator is located at the lower front of the spot welding machine housing with its ultrasonic emission end facing downwards.

[0013] The spot welding device also includes a fixing component, which is disposed on the rear side wall of the spot welding machine housing. The fixing component is installed and cooperates with the working column to allow the spot welding machine housing to be installed on the working column.

[0014] The fixing component is provided with fixing holes corresponding to the working column. The diameter of the fixing holes is similar to that of the working column. The fixing component is fitted onto the working column through the fixing holes and moves back and forth along the length of the working column to move the spot welding machine housing along the height direction of the ultrasonic plastic spot welding machine.

[0015] The fixing component is provided with a locking component, which is located on the side wall of the fixing component and extends into the fixing hole from the outside to the inside so that the spot welding machine box is locked to the working column.

[0016] The ultrasonic plastic spot welding machine also includes a control device for controlling the ultrasonic plastic spot welding machine. The control device includes a control button and a control board. The control button is located on the front side of the base, and the control board is located in the inner cavity of the base and is electrically connected to the control button and the spot welding device respectively.

[0017] The beneficial effects of this utility model are as follows:

[0018] This utility model, through an ultrasonic plastic spot welding machine employing the above technical solution, transmits high-frequency vibrating ultrasonic waves to the surface of a second workpiece, causing the surface of the second workpiece to melt and disperse rapidly, reducing the melting time of the plastic workpiece, enabling the second workpiece to be quickly fixed onto the first workpiece, reducing product assembly time, and improving product assembly efficiency. Attached Figure Description

[0019] Figure 1 This is an exploded view of a refrigerator guide rail plate according to an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of an ultrasonic plastic spot welding machine according to an embodiment of the present invention.

[0021] Figure 3 This is an exploded view of an embodiment of the ultrasonic plastic spot welding machine of this utility model.

[0022] Figure 4 This is a schematic diagram of the base structure according to an embodiment of the present invention.

[0023] Figure 5 This is an exploded view of a clamping mechanism according to an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the structure of a spot welding device according to an embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram of the operation of an ultrasonic plastic spot welding machine according to an embodiment of the present invention. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0027] See Figure 2-7This ultrasonic plastic spot welding machine includes a base 2, a clamping mechanism 3, a spot welding device 4, and a control device. Specifically, the base 2 is equipped with a worktable 21 and a work column 22. The worktable 21 is fixed to the top surface of the base 2 by fastening components. The work column 22 is inserted into the top surface of the base 2 and located behind the worktable 21. The clamping mechanism 3 is fixed to the top surface of the worktable 21. The first workpiece 11 and the second workpiece 12 are fixed on the worktable 21 of the ultrasonic plastic spot welding machine by the clamping mechanism 3. The spot welding device 4 is installed on the work column 22, and its ultrasonic transmitting end is located above the clamping mechanism 3 and aligned with the second workpiece 12. It emits high-frequency vibrating ultrasonic waves to weld the second workpiece 12. Part 12 is welded onto the first workpiece 11. The control device includes a control button 51 and a control board. The control button 51 is located on the front side of the base 2 for easy operation by the operator. The control board is installed in the inner cavity of the base 2 and is electrically connected to the control button 51 and the spot welding device 4 respectively. When the first workpiece 11 and the second workpiece 12 are placed on the fixture mechanism 3, the spot welding device 4 transmits high-frequency vibrating ultrasonic waves to the surface of the second workpiece 12, causing the surface of the second workpiece 12 to melt and spread quickly, reducing the melting time of the plastic workpiece, and enabling the second workpiece 12 to be quickly fixed onto the first workpiece 11, reducing the product assembly time and improving the product assembly efficiency.

[0028] Furthermore, in this embodiment, the clamping mechanism 3 includes a base plate 31, a first clamping positioning block 32, and a second clamping positioning block 33. Specifically, the base plate 31 is fixed to the worktable 21 by clamps, screws, and nuts. The first clamping positioning block 32 is located on the left side of the top surface of the base plate 31, and its top surface is provided with a first positioning groove 320. The vertical projection of the first positioning groove 320 is square and corresponds to the shape and size of the outer edge of the middle part of the first workpiece 11. The second clamping positioning block 33 is located on the right side of the top surface of the base plate 31. A second positioning groove 330 is provided on its top surface. The vertical projection of the second positioning groove 330 is polygonal and corresponds to the shape and size of the outer edge of the right end of the first workpiece 11. When the clamping mechanism 3 is set on the worktable 21 and the first workpiece 11 is placed on the clamping mechanism 3, the first workpiece 11 is fixed below the ultrasonic transmitting end of the spot welding device 4 by the first clamping positioning block 32 and the second clamping positioning block 33. When the second workpiece 12 is placed on the first workpiece 11, the ultrasonic transmitting end of the spot welding device 4 is aligned with the second workpiece 12. Through the above technical solution, the first workpiece 11 and the second workpiece 12 can be quickly clamped in the ultrasonic plastic spot welding machine, which can be understood by those skilled in the art.

[0029] Furthermore, the first clamping positioning block 32 is provided with a first unloading groove 321, and the second clamping positioning block 33 is provided with a second unloading groove 331. Specifically, in this embodiment, the number of first unloading grooves 321 is preferably three, which are set on the bottom surface of the first positioning groove 320 and extend along the length direction of the first clamping positioning block 32. The number of second unloading grooves 331 is preferably three, which are set on the bottom surface of the second positioning groove 330 and extend along the length direction of the second clamping positioning block 33. Through the above technical solution, the first workpiece 11 can be disassembled from the clamping mechanism 3 through the first unloading groove 321 and / or the second unloading groove 331, which reduces the disassembly time of the first workpiece 11 from the clamping mechanism 3 and further improves the assembly efficiency of the product. This is understandable to those skilled in the art.

[0030] Furthermore, in this embodiment, the spot welding device 4 includes a spot welding machine housing 41, an ultrasonic generator 42, and fixing components 43. Specifically, the number of fixing components 43 is preferably two, which are spaced apart along the height direction of the spot welding machine housing 41 on the rear side wall of the spot welding machine housing 41. The fixing components 43 are installed and cooperated with the working column 22 so that the spot welding machine housing 41 is installed on the working column 22. The ultrasonic generator 42 is installed at the lower front of the spot welding machine housing 41, so that its ultrasonic transmitting end faces downward and is aligned with the worktable 21. The second workpiece 12 located on the clamping mechanism 3 is aligned with the ultrasonic transmitting end of the ultrasonic generator 42 by adjusting the clamping mechanism 3. Those skilled in the art will understand this.

[0031] Furthermore, the fixing component 43 is provided with a fixing hole 430. Specifically, in this embodiment, both the fixing hole 430 and the working column 22 are circular in shape, and the diameter of the fixing hole 430 is the same as the diameter of the working column 22. The fixing component 43 is fitted onto the working column 22 through the fixing hole 430 to realize the spot welding machine housing 41 being installed on the working column 22. The fixing component 43 moves back and forth along the length direction of the working column 22 through the fixing hole 430, so that the spot welding machine housing 41 moves along the height direction of the ultrasonic plastic spot welding machine. This allows the spot welding device 4 to adjust the distance between itself and the clamping mechanism 3 according to the product thickness, making the ultrasonic plastic spot welding machine applicable to more products and improving the applicability of the ultrasonic plastic spot welding machine to a certain extent. This is understandable to those skilled in the art.

[0032] Furthermore, the fixing component 43 is provided with a locking component 431. Specifically, in this embodiment, the locking component 431 is preferably a screw and is provided on the side wall of the fixing component 43, extending from the outside to the inside into the fixing hole 430. The side wall of the fixing component 43 is provided with a screw hole. The locking component 431 cooperates with the screw hole and presses against the side wall of the working column 22. The fixing component 43 is locked to the working column 22, thereby locking the spot welding machine housing 41 onto the working column 22. This prevents the spot welding device 4 from accidentally moving downward and damaging the ultrasonic generator 42 when the ultrasonic plastic spot welding machine is working, ensuring the normal operation of the ultrasonic plastic spot welding machine. This is something that those skilled in the art can understand.

[0033] When this ultrasonic plastic spot welding machine is working, firstly, the first workpiece 11 is placed on the clamping mechanism 3 and the second workpiece 12 is placed on the first workpiece 11. Secondly, the position of the clamping mechanism 3 is adjusted on the worktable 21 of the base 2 so that the second workpiece 12 is aligned with the ultrasonic transmitting end of the ultrasonic generator 42 of the spot welding device 4, and the height position of the spot welding device 4 is adjusted so that the ultrasonic transmitting end of the ultrasonic generator 42 and the second workpiece 12 are kept at a suitable distance. Thirdly, the spot welding device 4 is started by the control device and the second workpiece 12 is ultrasonically welded. Finally, the product is taken out from the clamping mechanism 3 to complete the assembly of the product.

[0034] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. An ultrasonic plastic spot welding machine, characterized in that, The device includes a base (2), a clamping mechanism (3) for fixing a first workpiece (11) and a second workpiece (12) on an ultrasonic plastic spot welding machine, and a spot welding device (4) for welding the second workpiece (12) onto the first workpiece (11). The clamping mechanism (3) and the spot welding device (4) are both disposed on the base (2). The clamping mechanism (3) is located below the ultrasonic transmitting end of the spot welding device (4) so ​​that the second workpiece (12) is aligned with the ultrasonic transmitting end of the spot welding device (4). The clamping mechanism (3) includes a base plate (31), a first clamping positioning block (32) and a second clamping positioning block (33). The base plate (31) is fixed on the workbench (21) by clamps, screws and nuts. The first clamping positioning block (32) and the second clamping positioning block (33) are respectively located on the left and right sides of the top surface of the base plate (31). When the clamping mechanism (3) is set on the workbench (21), the first clamping positioning block (32) or the second clamping positioning block (33) is located below the ultrasonic transmitting end of the spot welding device (4). The first fixture positioning block (32) has a first positioning groove (320) on its top surface. The vertical projection shape of the first positioning groove (320) corresponds to the outer edge of the first workpiece (11). The second fixture positioning block (33) has a second positioning groove (330) on its top surface. The vertical projection shape of the second positioning groove (330) corresponds to the outer edge of the first workpiece (11). The first clamp positioning block (32) is provided with a first unloading groove (321), which is located on the bottom surface of the first positioning groove (320) and extends along the length direction of the first clamp positioning block (32). The second clamp positioning block (33) is provided with a second unloading groove (331), which is located on the bottom surface of the second positioning groove (330) and extends along the length direction of the second clamp positioning block (33).

2. The ultrasonic plastic spot welding machine according to claim 1, characterized in that, The base (2) is provided with a workbench (21) and a working column (22). The workbench (21) and the working column (22) are both located on the top surface of the base (2). The working column (22) is located outside the workbench (21). The clamping mechanism (3) is fixed on the top surface of the workbench (21). The spot welding device (4) is located on the working column (22).

3. The ultrasonic plastic spot welding machine according to claim 2, characterized in that, The spot welding device (4) includes a spot welding machine box (41) and an ultrasonic generator (42). The spot welding machine box (41) is mounted on the working column (22), and the ultrasonic generator (42) is located in front of and below the spot welding machine box (41) with its ultrasonic transmitting end facing downward.

4. The ultrasonic plastic spot welding machine according to claim 3, characterized in that, The spot welding device (4) also includes a fixing component (43), which is disposed on the rear side wall of the spot welding machine housing (41). The fixing component (43) and the working column (22) are installed and cooperate with each other so that the spot welding machine housing (41) is installed on the working column (22).

5. The ultrasonic plastic spot welding machine according to claim 4, characterized in that, The fixing component (43) is provided with a fixing hole (430) corresponding to the working column (22). The diameter of the fixing hole (430) is equivalent to the diameter of the working column (22). The fixing component (43) is fitted onto the working column (22) through the fixing hole (430) and moves back and forth along the length of the working column (22) so that the spot welding machine box (41) moves along the height direction of the ultrasonic plastic spot welding machine.

6. The ultrasonic plastic spot welding machine according to claim 4, characterized in that, The fixing component (43) is provided with a locking component (431), which is located on the side wall of the fixing component (43) and extends from the outside to the inside into the fixing hole (430) so that the spot welding machine box (41) is locked on the working column (22).

7. The ultrasonic plastic spot welding machine according to any one of claims 1-6, characterized in that, The ultrasonic plastic spot welding machine also includes a control device for controlling the ultrasonic plastic spot welding machine. The control device includes a control button (51) and a control board. The control button (51) is located on the front side of the base (2). The control board is located in the inner cavity of the base (2) and is electrically connected to the control button (51) and the spot welding device (4) respectively.

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